Annu Int Conf IEEE Eng Med Biol Soc
July 2023
Spinal motor neurons receive a wide range of input frequencies. However, only frequencies below ca. 10 Hz are directly translated into motor output.
View Article and Find Full Text PDFUnlabelled: Összefoglaló. Előzmény: A szívinfarktus miatt kezelt betegek ellátásának regionális adataira és a betegek hosszú távú kórlefolyására vonatkozó hazai kutatás eddig nem történt. Célkitűzés: A vizsgálat célja a Magyar Infarktus Regiszter pilotidőszakában rögzített betegeknél az ellátás és a 10 éves túlélés elemzése a magyarországi nagyrégiókban.
View Article and Find Full Text PDFMovement intention detection using electroencephalography (EEG) is a challenging but essential component of brain-computer interfaces (BCIs) for people with motor disabilities.The goal of this study is to develop a new experimental paradigm to perform asynchronous online detection of movement based on low-frequency time-domain EEG features, concretely on movement-related cortical potentials. The paradigm must be easily transferable to people without any residual upper-limb movement function and the BCI must be independent of upper-limb movement onset measurements and external cues.
View Article and Find Full Text PDFObjective: Daily life tasks can become a significant challenge for motor impaired persons. Depending on the severity of their impairment, they require more complex solutions to retain an independent life. Brain-computer interfaces (BCIs) are targeted to provide an intuitive form of control for advanced assistive devices such as robotic arms or neuroprostheses.
View Article and Find Full Text PDFThe aim of the MoreGrasp project is to develop a non-invasive, multimodal user interface including a brain-computer interface (BCI) for control of a grasp neuroprostheses in individuals with high spinal cord injury (SCI). The first results of the ongoing MoreGrasp clinical feasibility study involving end users with SCI are presented. This includes BCI screening sessions, in which we investigate the electroencephalography (EEG) patterns associated with single, natural movements of the upper limb.
View Article and Find Full Text PDFWe show that persons with spinal cord injury (SCI) retain decodable neural correlates of attempted arm and hand movements. We investigated hand open, palmar grasp, lateral grasp, pronation, and supination in 10 persons with cervical SCI. Discriminative movement information was provided by the time-domain of low-frequency electroencephalography (EEG) signals.
View Article and Find Full Text PDFThe authors analyzed data from the Hungarian Myocardial Infarction Registry (HUMIR) to examine the potential impact of gender on the treatment and 30-day and 1-year mortality of patients with myocardial infarction (MI). The National Registry of Myocardial Infarction included 42,953 patients between January 1, 2013 and December 31, 2016; 19,875 of whom were diagnosed with ST-elevation myocardial infarction (STEMI) and 23,078 with non-ST-elevation myocardial infarction (NSTEMI). The proportion of women was 39% and 41.
View Article and Find Full Text PDFIntroduction: The significance of the total ischemic time (from the beginning of the complaint to the opening of the vessel) is an important factor for myocardial salvage.
Aim: The aim of the study was to determine the prognostic significance of the TIT in patients with ST elevation myocardial infarction in Hungary.
Method: From 1 January 2014 all patients with myocardial infarction were recorded by law in an on-line database of the Hungarian Myocardial Infarction Registry.
Evidence is conflicting regarding the clinical benefits of selecting P2Y inhibitors based on platelet function testing (PFT). Between March 1, 2013 and March 1, 2014, we collected clinical characteristics and platelet function data in a nationwide acute myocardial infarction (AMI) registry from 15 interventional cardiology centers in Hungary. The risk of all-cause mortality at 1 year were compared after propensity score (PS) matching between patients receiving PFT-guided and unguided P2Y-inhibitor therapies.
View Article and Find Full Text PDFIntroduction And Aim: By using the database of the National Registry of Myocardial Infarction, the authors examine the prognosis of patients treated with acute myocardial infarction, in case of whom there was new or presumably new left bundle branch block (nLBBB) on the ECG recorded at hospitalization.
Method: We recorded the details of 18 091 patients treated with acute myocardial infarction (AMI) between 1 January 2014 and 30 June 2015 in the National Registry of Myocardial Infarction. In case of 8334 patients, the clinical diagnosis was ST-elevation myocardial infarction (STEMI), whereas in 9757 cases it was non-ST elevation myocardial infarction (NSTEMI).
Objective: Despite the high number of degrees of freedom of the human hand, most actions of daily life can be executed incorporating only palmar, pincer and lateral grasp. In this study we attempt to discriminate these three different executed reach-and-grasp actions utilizing their EEG neural correlates.
Approach: In a cue-guided experiment, 15 healthy individuals were asked to perform these actions using daily life objects.
How neural correlates of movements are represented in the human brain is of ongoing interest and has been researched with invasive and non-invasive methods. In this study, we analyzed the encoding of single upper limb movements in the time-domain of low-frequency electroencephalography (EEG) signals. Fifteen healthy subjects executed and imagined six different sustained upper limb movements.
View Article and Find Full Text PDFIntroduction And Aim: The aim was to study the patients' adherence to some evidence-based medication (statins, beta blockers, platelet and RAS inhibitors) after suffering a myocardial infarction, and its impact on the outcome.
Method: Retrospective observational cohort study was carried out from the data of the Hungarian Myocardial Infarction Registry between January 1, 2013, and December 31, 2014. 14,843 patients were alive at the end of hospital treatment, from them, those who had no myocardial infarction or death until 180 days were followed for one year.
Using low-frequency time-domain electroencephalographic (EEG) signals we show, for the same type of upper limb movement, that goal-directed movements have different neural correlates than movements without a particular goal. In a reach-and-touch task, we explored the differences in the movement-related cortical potentials (MRCPs) between goal-directed and non-goal-directed movements. We evaluated if the detection of movement intention was influenced by the goal-directedness of the movement.
View Article and Find Full Text PDFUnlabelled: The authors summarize the most relevant data of myocardial infarction patients according to the National Myocardial Infarction Registry data base. In 2015 12,681 patients had 12,941 acute myocardial infarctions. Less than half of patients (44.
View Article and Find Full Text PDFIn this chapter, we give an overview of the Graz-BCI research, from the classic motor imagery detection to complex movement intentions decoding. We start by describing the classic motor imagery approach, its application in tetraplegic end users, and the significant improvements achieved using coadaptive brain-computer interfaces (BCIs). These strategies have the drawback of not mirroring the way one plans a movement.
View Article and Find Full Text PDFIntroduction: To the best of the authors' knowledge, very few publications are available which report on the prognostic significance of the culprit vessel in patients with ST elevation myocardial infarction treated with successful primary percutaneous coronary intervention.
Aim: The aim of the authors was to obtain data on the significance of the culprit vessel in patients with ST elevation myocardial infarction treated successfully by primary percutaneous coronary intervention.
Method: The authors performed a retrospective study in 10,763 patients with ST elevation myocardial infarction who underwent successful primary percutaneous coronary intervention.
Background: Data are limited on the real-life use of coronary intervention (PCI) and on its long-term efficacy and safety in elderly patients with acute myocardial infarction (AMI).
Methods: Data from a nation-wide registry of patients treated due to an AMI event in centers of invasive cardiology were analyzed for the potential interaction of age on the utilization of invasive therapy and outcome. Follow-up data of consecutive patients between March 1, 2013, and March 1, 2014 were analyzed.
The authors review data sources related to death arising from myocardial infarction, as well as the major elements of the Hungarian data collection of the Central Statistical Office, the National Health Insurance Fund and the National Registry of Myocardial Infarction. They also discuss conclusions which can be drawn from the data. It was found that the financial database - in accordance with its purpose - is suitable for monitoring the costs arising during the treatment of patient, but the quality and efficiency of treatment cannot be judged on the basis of this database.
View Article and Find Full Text PDFAnnu Int Conf IEEE Eng Med Biol Soc
August 2015
The natural control of neuroprostheses is currently a challenge in both rehabilitation engineering and brain-computer interfaces (BCIs) research. One of the recurrent problems is to know exactly when to activate such devices. For the execution of the most common activities of daily living, these devices only need to be active when in the presence of a goal.
View Article and Find Full Text PDFAnnu Int Conf IEEE Eng Med Biol Soc
August 2015
Brain-computer interfaces (BCIs) can detect movement imaginations (MI) which can act as a control signal for a neuroprosthesis of a paralyzed person. However, today's non-invasive BCIs can only detect simply qualities of MI, like what body part is subjected to MI. More advanced future non-invasive BCIs should be able to detect many qualities of MI to allow a natural control of a neuroprosthesis.
View Article and Find Full Text PDFA brain-computer interface (BCI) can help to overcome movement deficits in persons with spinal-cord injury. Ideally, such a BCI detects detailed movement imaginations, i.e.
View Article and Find Full Text PDFIntroduction: Afew data have been published on the clinical characteristics of different types of myocardial infarction in Hungary.
Aim: To compare clinical data of patients with ST-segment elevation and non-ST-segment elevation myocardial infarction based on the National Myocardial Infarction Registry database.
Method: Data recorded in the National Myocardial Infarction Registry between January 1, 2010 and June 30, 2012 were included in the analysis.